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/*
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License: LGPL as per: http://www.gnu.org/copyleft/lesser.html
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$Id: ToolBase.js 3881 2008-02-27 15:41:07Z gjvoosten $
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*/
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/**
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* Base Tool object that all Tools extend.
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* @constructor
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* @author Mike Adair mike.adairATccrs.nrcan.gc.ca
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* @param toolNode The tool node from the Config XML file.
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* @param model The widget object which created this tool.
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*/
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function ToolBase(toolNode, model) {
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this.model = model;
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this.toolNode = toolNode;
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//set the ID for this tool
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var id = toolNode.selectSingleNode("@id");
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if (id) {
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this.id = getNodeValue(id);
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} else {
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this.id = "MbTool_" + mbIds.getId();
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}
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/**
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* Initialize the targetModel property to point to the object. This happens
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* as an init listener to ensure that the referenced model has been created.
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* @param toolRef Pointer to this object.
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*/
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this.initTargetModel = function(toolRef) {
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/** The model this tool will update. */
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var targetModel = toolRef.toolNode.selectSingleNode("mb:targetModel");
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if (targetModel) {
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var targetModelName = getNodeValue(targetModel);
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//toolRef.targetModel = eval("config.objects."+targetModelName);
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toolRef.targetModel = window.config.objects[targetModelName];
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if (!toolRef.targetModel) alert(mbGetMessage("noTargetModelTool", targetModelName, toolRef.id));
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} else {
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toolRef.targetModel = toolRef.model;
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}
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}
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this.model.addListener( "init", this.initTargetModel, this );
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/**
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* Initialize the mouseHandler property to point to the object. This happens
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* as an init listener to ensure that the referenced model has been created.
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* @param toolRef Pointer to this object.
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*/
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this.initMouseHandler = function(toolRef) {
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/** Mouse handler which this tool will register listeners with. */
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var mouseHandler = toolRef.toolNode.selectSingleNode("mb:mouseHandler");
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if (mouseHandler) {
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toolRef.mouseHandler = window.config.objects[getNodeValue(mouseHandler)];
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if (!toolRef.mouseHandler) {
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alert(mbGetMessage("noMouseHandlerTool", getNodeValue(mouseHandler), toolRef.id));
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}
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}
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}
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this.model.addListener( "init", this.initMouseHandler, this );
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/**
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* Convenient access to Mapbuilder.getProperty
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* @param property property to get
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* @param default value to use if property is not set
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* @return the value for the property
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*/
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this.getProperty = function(property, defaultValue) {
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return Mapbuilder.getProperty(toolNode, property, defaultValue);
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}
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//tools enabled by default; can set to false in config for initial loading
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this.enabled = Mapbuilder.parseBoolean(this.getProperty("mb:enabled", true));
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}
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